20445425005504 has 56 divisors (see below), whose sum is σ = 41515966426880. Its totient is φ = 9984721146624.

The previous prime is 20445425005417. The next prime is 20445425005513. The reversal of 20445425005504 is 40550052454402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153613417 + ... + 153746455.

Almost surely, 2^{20445425005504} is an apocalyptic number.

It is an amenable number.

20445425005504 is an abundant number, since it is smaller than the sum of its proper divisors (21070541421376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20445425005504 is a wasteful number, since it uses less digits than its factorization.

20445425005504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188937 (or 188927 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 40.

Adding to 20445425005504 its reverse (40550052454402), we get a palindrome (60995477459906).

The spelling of 20445425005504 in words is "twenty trillion, four hundred forty-five billion, four hundred twenty-five million, five thousand, five hundred four".